The Grey relationship degree of NEPE solid propellant sensitivities was calculated by numerical method, including impact sensitivities, friction sensitivities, flame sensitivities and other sensitivities from composing and granularities. The results indict that plasticization ratio is the main influence factors of friction sensitiity and regional thermal sensitiity. The contants of HMX is the main influence factors of Shock sensitivity and 5 s explosion temperature, S is the main influence factors of impact sensitivity electrostatic spark sensitivity and flame sensitivity. Granularities result indict that particle size of Al is the main influence factors of friction sensitiity, 5 s explosion temperature and flame sensitivity. The particle size of AP is the main influence factors of regional thermal sensitiity and electrostatic spark sensitivity, particle size of HMX is the main influence factors of impact sensitivity.